WO2009073730A3 - Compression and decompression of computed tomography data - Google Patents

Compression and decompression of computed tomography data Download PDF

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Publication number
WO2009073730A3
WO2009073730A3 PCT/US2008/085417 US2008085417W WO2009073730A3 WO 2009073730 A3 WO2009073730 A3 WO 2009073730A3 US 2008085417 W US2008085417 W US 2008085417W WO 2009073730 A3 WO2009073730 A3 WO 2009073730A3
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WO
WIPO (PCT)
Prior art keywords
compression
compressed
projection data
subsets
significant samples
Prior art date
Application number
PCT/US2008/085417
Other languages
French (fr)
Other versions
WO2009073730A2 (en
Inventor
Albert W Wegener
Original Assignee
Samplify Systems Inc
Albert W Wegener
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samplify Systems Inc, Albert W Wegener filed Critical Samplify Systems Inc
Priority to CN200880118931.4A priority Critical patent/CN101883525B/en
Priority to KR1020107014816A priority patent/KR101155163B1/en
Priority to EP08857929A priority patent/EP2217149A4/en
Priority to JP2010537032A priority patent/JP5460612B2/en
Priority to CA2706459A priority patent/CA2706459A1/en
Publication of WO2009073730A2 publication Critical patent/WO2009073730A2/en
Publication of WO2009073730A3 publication Critical patent/WO2009073730A3/en
Priority to IL205685A priority patent/IL205685A0/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/124—Quantisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/136—Incoming video signal characteristics or properties
    • H04N19/14—Coding unit complexity, e.g. amount of activity or edge presence estimation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/146—Data rate or code amount at the encoder output
    • H04N19/152—Data rate or code amount at the encoder output by measuring the fullness of the transmission buffer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/30—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability
    • H04N19/33—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability in the spatial domain

Abstract

A compression method and subsystem for a CT scanner compresses projection data from the data acquisition system. The projection data are classified into subsets of more significant samples and subsets of less significant samples. The subsets are compressed in accordance with compression control parameters so that the less significant samples are compressed to a greater degree than the more significant samples. The bit rate of the compressed projection data can be monitored and the compression control parameters can be adjusted to provide a desired bit rate. The compressed data are decompressed in accordance with the compression control parameters for reconstruction of an image from the decompressed projection data. This abstract does not limit the scope of the invention as described in the claims.
PCT/US2008/085417 2007-12-03 2008-12-03 Compression and decompression of computed tomography data WO2009073730A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CN200880118931.4A CN101883525B (en) 2007-12-03 2008-12-03 Compression and decompression of computed tomography data
KR1020107014816A KR101155163B1 (en) 2007-12-03 2008-12-03 Compression and decompression of computed tomography data
EP08857929A EP2217149A4 (en) 2007-12-03 2008-12-03 Compression and decompression of computed tomography data
JP2010537032A JP5460612B2 (en) 2007-12-03 2008-12-03 Compression and decompression of computed tomography data
CA2706459A CA2706459A1 (en) 2007-12-03 2008-12-03 Compression and decompression of computed tomography data
IL205685A IL205685A0 (en) 2007-12-03 2010-05-11 Compression and decompression of computed tomography data

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/949,670 US7844097B2 (en) 2007-12-03 2007-12-03 Compression and decompression of computed tomography data
US11/949,670 2007-12-03

Publications (2)

Publication Number Publication Date
WO2009073730A2 WO2009073730A2 (en) 2009-06-11
WO2009073730A3 true WO2009073730A3 (en) 2009-07-23

Family

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Family Applications (1)

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PCT/US2008/085417 WO2009073730A2 (en) 2007-12-03 2008-12-03 Compression and decompression of computed tomography data

Country Status (8)

Country Link
US (1) US7844097B2 (en)
EP (1) EP2217149A4 (en)
JP (1) JP5460612B2 (en)
KR (1) KR101155163B1 (en)
CN (1) CN101883525B (en)
CA (1) CA2706459A1 (en)
IL (1) IL205685A0 (en)
WO (1) WO2009073730A2 (en)

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Also Published As

Publication number Publication date
IL205685A0 (en) 2010-11-30
EP2217149A2 (en) 2010-08-18
JP2011505228A (en) 2011-02-24
KR20100099252A (en) 2010-09-10
US20090169119A1 (en) 2009-07-02
US7844097B2 (en) 2010-11-30
CN101883525B (en) 2011-11-16
WO2009073730A2 (en) 2009-06-11
JP5460612B2 (en) 2014-04-02
CN101883525A (en) 2010-11-10
KR101155163B1 (en) 2012-06-12
EP2217149A4 (en) 2012-11-14
CA2706459A1 (en) 2009-06-11

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